# SplHeap::top

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

SplHeap::top — Peeks at the node from the top of the heap

### Beschreibung

public SplHeap::top(): mixed

### Parameter-Liste

Diese Funktion besitzt keine Parameter.

### Rückgabewerte

The value of the node on the top.

### Fehler/Exceptions

Throws RuntimeException when the data-structure is empty.

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